technologies. In this paper, we describe a new free-standing silica-based composite film that
exhibits reversible thermochromic reflection, induced by a liquid crystalline guest in the
pores of iridescent mesoporous films. We demonstrate that selective reflection from the
novel mesoporous organosilica material with chiral nematic organization can be reversibly
switched by thermal cycling of the 8CB guest between its isotropic and liquid crystalline …